RegistrySecurity.RemoveAccessRuleAll メソッドとは何？わかりやすく解説 Weblio辞書

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.NET Framework クラスライブラリリファレンス

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RegistrySecurity.RemoveAccessRuleAll メソッド

メモ : このメソッドは、.NET Framework version 2.0 で新しく追加されたものです。

指定した規則と同じユーザーおよび同じ AccessControlType (許可または拒否) が指定されたアクセス制御規則をすべて検索し、一致する規則が見つかった場合は、その規則を削除します。

名前空間: System.Security.AccessControl
アセンブリ: mscorlib (mscorlib.dll 内)
構文

Visual Basic (宣言)

Public Sub RemoveAccessRuleAll ( _
    rule As RegistryAccessRule _
)

Visual Basic (使用法)

Dim instance As RegistrySecurity
Dim rule As RegistryAccessRule

instance.RemoveAccessRuleAll(rule)

public void RemoveAccessRuleAll (
    RegistryAccessRule rule
)

C++

public:
void RemoveAccessRuleAll (
    RegistryAccessRule^ rule
)

public void RemoveAccessRuleAll (
    RegistryAccessRule rule
)

JScript

public function RemoveAccessRuleAll (
    rule : RegistryAccessRule
)

パラメータ

rule: 検索対象のユーザーと AccessControlType を指定する RegistryAccessRule。この規則で指定する権限、継承フラグ、または反映フラグは、無視されます。

例外

例外の種類	条件
ArgumentNullException	rule が null 参照 (Visual Basic では Nothing) です。

解説

現在の RegistrySecurity で、rule と同じユーザーおよび同じ AccessControlType 値が指定された規則が検索されます。この検索を実行する場合は、rule で指定する権限、継承フラグ、または反映フラグは、無視されます。一致する規則が見つからなかった場合、処理は実行されません。

たとえば、あるユーザーに対して異なる継承フラグと反映フラグが設定された、さまざまな権限を許可する複数の規則が設定されている場合、すべての規則を削除するには、任意の権限とフラグを指定してそのユーザーと AccessControlType.Allow を指定する RegistryAccessRule オブジェクトを作成し、その規則を RemoveAccessRuleAll メソッドに渡します。

使用例

RemoveAccessRuleAll メソッドを使用して、権限とフラグを無視してユーザーと AccessControlType に一致するすべての規則を削除するコード例を次に示します。

この例では、RegistrySecurity オブジェクトを作成し、異なる継承フラグと反映フラグを指定して、現在のユーザーに対して各種権限を許可および拒否する規則を追加します。さらに、この例では、現在のユーザーに所有権の取得を許可する新しい規則を作成し、その規則を RemoveAccessRuleAll メソッドに渡して、アクセスを許可する 2 つの規則を削除します。

メモ
この例では、セキュリティオブジェクトが RegistryKey オブジェクトに割り当てられません。Microsoft.Win32.RegistryKey.GetAccessControl メソッドおよび RegistryKey.SetAccessControl メソッドのトピックを参照してください。

Visual Basic

Option Explicit
Imports System
Imports System.Security.AccessControl
Imports System.Security.Principal
Imports System.Security
Imports Microsoft.Win32

Public Class Example

    Public Shared Sub Main()

        Dim user As String
 = Environment.UserDomainName _ 
            & "\" & Environment.UserName

        ' Create a security object that grants no access.
        Dim mSec As New
 RegistrySecurity()

        ' Add a rule that grants the current user the right
        ' to read and enumerate the name/value pairs in a key, 
        ' to read its access and audit rules, to enumerate
        ' its subkeys, to create subkeys, and to delete the key. 
        ' The rule is inherited by all contained subkeys.
        '
        Dim rule As New
 RegistryAccessRule(user, _
            RegistryRights.ReadKey Or RegistryRights.WriteKey
 _
                Or RegistryRights.Delete, _
            InheritanceFlags.ContainerInherit, _
            PropagationFlags.None, _
            AccessControlType.Allow)
        mSec.AddAccessRule(rule)

        ' Add a rule that allows the current user the right
        ' right to set the name/value pairs in a key. 
        ' This rule is inherited by contained subkeys, but
        ' propagation flags limit it to immediate child 
        ' subkeys.
        rule = New RegistryAccessRule(user, _
            RegistryRights.ChangePermissions, _
            InheritanceFlags.ContainerInherit, _
            PropagationFlags.InheritOnly Or PropagationFlags.NoPropagateInherit,
 _
            AccessControlType.Allow)
        mSec.AddAccessRule(rule)

        ' Add a rule that denies the current user the right
        ' to set the name/value pairs in a key. This rule
        ' has no inheritance or propagation flags, so it 
        ' affects only the key itself.
        rule = New RegistryAccessRule(user, _
            RegistryRights.SetValue, _
            AccessControlType.Deny)
        mSec.AddAccessRule(rule)

        ' Display the rules in the security object.
        ShowSecurity(mSec)

        ' Create a rule that allows the current user the 
        ' right to change the ownership of the key, with
        ' no inheritance or propagation flags. The rights
        ' and flags are ignored by RemoveAccessRuleAll,
        ' and all rules that allow access for the current
        ' user are removed.
        rule = New RegistryAccessRule(user, _
            RegistryRights.TakeOwnership, _
            AccessControlType.Allow)
        mSec.RemoveAccessRuleAll(rule)

        ' Show that all rules that allow access have been 
        ' removed.
        ShowSecurity(mSec)

    End Sub 

    Private Shared Sub ShowSecurity(ByVal
 security As RegistrySecurity)
        Console.WriteLine(vbCrLf & "Current access rules:"
 & vbCrLf)

        For Each ar As RegistryAccessRule
 In _
            security.GetAccessRules(True, True,
 GetType(NTAccount))

            Console.WriteLine("        User: {0}",
 ar.IdentityReference)
            Console.WriteLine("        Type: {0}",
 ar.AccessControlType)
            Console.WriteLine("      Rights: {0}",
 ar.RegistryRights)
            Console.WriteLine(" Inheritance: {0}",
 ar.InheritanceFlags)
            Console.WriteLine(" Propagation: {0}",
 ar.PropagationFlags)
            Console.WriteLine("   Inherited? {0}",
 ar.IsInherited)
            Console.WriteLine()
        Next

    End Sub
End Class 

'This code example produces output similar to following:
'
'Current access rules:
'
'        User: TestDomain\TestUser
'        Type: Deny
'      Rights: SetValue
' Inheritance: None
' Propagation: None
'   Inherited? False
'
'        User: TestDomain\TestUser
'        Type: Allow
'      Rights: SetValue, CreateSubKey, Delete, ReadKey
' Inheritance: ContainerInherit
' Propagation: None
'   Inherited? False
'
'        User: TestDomain\TestUser
'        Type: Allow
'      Rights: ChangePermissions
' Inheritance: ContainerInherit
' Propagation: NoPropagateInherit, InheritOnly
'   Inherited? False
'
'
'Current access rules:
'
'        User: TestDomain\TestUser
'        Type: Deny
'      Rights: SetValue
' Inheritance: None
' Propagation: None
'   Inherited? False
'

using System;
using System.Security.AccessControl;
using System.Security.Principal;
using System.Security;
using Microsoft.Win32;

public class Example
{
    public static void Main()
    {
        string user = Environment.UserDomainName + "\\"
            + Environment.UserName;

        // Create a security object that grants no access.
        RegistrySecurity mSec = new RegistrySecurity();

        // Add a rule that grants the current user the right
        // to read and enumerate the name/value pairs in a key, 
        // to read its access and audit rules, to enumerate
        // its subkeys, to create subkeys, and to delete the key. 
        // The rule is inherited by all contained subkeys.
        //
        RegistryAccessRule rule = new RegistryAccessRule(user,
 
            RegistryRights.ReadKey | RegistryRights.WriteKey
                | RegistryRights.Delete, 
            InheritanceFlags.ContainerInherit, 
            PropagationFlags.None, 
            AccessControlType.Allow);
        mSec.AddAccessRule(rule);

        // Add a rule that allows the current user the right
        // right to set the name/value pairs in a key. 
        // This rule is inherited by contained subkeys, but
        // propagation flags limit it to immediate child 
        // subkeys.
        rule = new RegistryAccessRule(user, 
            RegistryRights.ChangePermissions,
            InheritanceFlags.ContainerInherit,
            PropagationFlags.InheritOnly | PropagationFlags.NoPropagateInherit, 
            AccessControlType.Allow);
        mSec.AddAccessRule(rule);

        // Add a rule that denies the current user the right
        // to set the name/value pairs in a key. This rule
        // has no inheritance or propagation flags, so it 
        // affects only the key itself.
        rule = new RegistryAccessRule(user,
            RegistryRights.SetValue,
            AccessControlType.Deny);
        mSec.AddAccessRule(rule);

        // Display the rules in the security object.
        ShowSecurity(mSec);

        // Create a rule that allows the current user the 
        // right to change the ownership of the key, with
        // no inheritance or propagation flags. The rights
        // and flags are ignored by RemoveAccessRuleAll,
        // and all rules that allow access for the current
        // user are removed.
        rule = new RegistryAccessRule(user, 
            RegistryRights.TakeOwnership, 
            AccessControlType.Allow);
        mSec.RemoveAccessRuleAll(rule);

        // Show that all rules that allow access have been 
        // removed.
        ShowSecurity(mSec);
    }

    private static void
 ShowSecurity(RegistrySecurity security)
    {
        Console.WriteLine("\r\nCurrent access rules:\r\n");

        foreach( RegistryAccessRule ar in 
            security.GetAccessRules(true, true,
 typeof(NTAccount)) )
        {
            Console.WriteLine("        User: {0}", ar.IdentityReference);
            Console.WriteLine("        Type: {0}", ar.AccessControlType);
            Console.WriteLine("      Rights: {0}", ar.RegistryRights);
            Console.WriteLine(" Inheritance: {0}", ar.InheritanceFlags);
            Console.WriteLine(" Propagation: {0}", ar.PropagationFlags);
            Console.WriteLine("   Inherited? {0}", ar.IsInherited);
            Console.WriteLine();
        }
    }
}

/* This code example produces output similar to following:

Current access rules:

        User: TestDomain\TestUser
        Type: Deny
      Rights: SetValue
 Inheritance: None
 Propagation: None
   Inherited? False

        User: TestDomain\TestUser
        Type: Allow
      Rights: SetValue, CreateSubKey, Delete, ReadKey
 Inheritance: ContainerInherit
 Propagation: None
   Inherited? False

        User: TestDomain\TestUser
        Type: Allow
      Rights: ChangePermissions
 Inheritance: ContainerInherit
 Propagation: NoPropagateInherit, InheritOnly
   Inherited? False


Current access rules:

        User: TestDomain\TestUser
        Type: Deny
      Rights: SetValue
 Inheritance: None
 Propagation: None
   Inherited? False

*/

プラットフォーム

バージョン情報

.NET Framework
サポート対象 : 2.0

参照

関連項目
RegistrySecurity クラス
RegistrySecurity メンバ
System.Security.AccessControl 名前空間

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RegistrySecurity.RemoveAccessRuleAll メソッドとは？ わかりやすく解説

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RegistrySecurity.RemoveAccessRuleAll メソッドとは？わかりやすく解説